The Ethernet switching module (10BaseFL 12 port) provides 12 switched, 10-Mbps (10BaseFL multimode fiber-optic), full- or half-duplex Ethernet ports using 12 straight-type (ST) fiber-optic connectors. This module requires supervisor engine module software release 1.2 or later. The LEDs provide status information for the module and the individual 10BaseFL Fast Ethernet port connections.